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Laser for rocket ignition: Carinthian research centre wins contract for space research


Following successful bench testing, CTR Carinthian Tech Research is working with Airbus Safran Launchers on a laser ignition system for use in space. The laser ignition system could be used in the Ariane 6 launch vehicle currently under development.

The European Space Agency (ESA) has awarded the Carinthian research centre CTR in cooperation with the German-French company Airbus Safran Launchers GmbH the contract to further develop CTR’s HiPoLas® laser ignition technology for launcher drive systems.

Ariane 6 – here in a computer simulation – is scheduled for use as ESA’s new rocket launcher in 2020.

© ESA/Airbus

The CTR research centre’s laser ignition system will be integrated in a combustion chamber for cryogenic fuels and rendered fit for space.


In previous projects with research carried out on test benches at the German Aerospace Centre (DLR), the CTR team already proved highly successfully that the HiPoLas® laser system is suitable for igniting rocket engines. What the new research contract involves is making the system fit for space and thus helping to develop a new generation of European launch vehicles. The research contract has a volume of around 700 thousand euros.


“For us this is unique recognition of the research and development work we have been doing over the past few years. In close cooperation with our partners we have adapted the HiPoLas® laser ignition system many times to various different piston engines for cars and to deliver power for turbines in planes and most recently for engines in satellites and launchers.

The system has also successfully undergone extensive testing. We now intend to integrate the ignition system in a combustion chamber for cryogenic fuels and adapt it to the extreme demands required for subsequent use in space,” says CTR project manager Gerhard Kroupa. This means the materials, components and the complete system including electronics have to meet the complex technical specifications and high quality standards for space travel.

Given the extreme mechanical loads during launch and the very high temperatures and pressures in the combustion chamber, great demands are placed on the system’s robustness. In addition to durability, the researchers also aim to improve cost efficiency over conventional ignition systems.

Depending on the results of the development project, the laser ignition system could also be taken into consideration in ongoing development of the Ariane 6 launcher. Scheduled for 2020, Ariane 6’s maiden flight will, according to ESA, continue to secure “Europe’s access to space”.


CTR researches into compact, diode-pumped solid-state lasers and ignition systems as well as their integration in various industrial applications. Miniaturising the laser source, which does not require any adjustable elements at all and can therefore withstand extreme temperatures and vibrations, has several advantages: a high degree of flexibility regarding the position of the ignition plasma inside the combustion chamber and a much higher pulse power compared with electrical ignition systems enable more reliable ignition even with complex mixture ratios and high fuel velocities. In addition to successful trials in car and stationary large gas engines, the laser source has also been tested for aviation use in jet engines.


As a research centre for smart sensors and system integration, CTR is one of a few non-university research facilities in Austria. Its mission and goal is to develop advanced products and processes based on integrated sensors, micro and nano systems. Established in 1997, CTR conducts research in regional, national and international R&D projects, is a member of Forschung Austria and has filed countless patents with partners in science and industry. CTR is part of Austria’s COMET research programme with the ASSIC centre of excellence - Austrian Smart Systems Integration Research Center.

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Birgit Rader-Brunner | idw - Informationsdienst Wissenschaft

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